計けい画かく的てき陳ちん腐ぷ化かけいかくてきちんぷかMeanings1nounplanned obsolescenceA business strategy of designing products with a limited useful life so that consumers will need to replace them.計けい画かく的てき陳ちん腐ぷ化かは、消しょう費ひを促そく進しんするために使つかわ